Patents Assigned to Joled, Inc.
  • Patent number: 9070900
    Abstract: A method of manufacturing a display not needing a complicated post-process for forming a reflecting mirror film and allowing degradation in an organic light-emitting device to be prevented, and a display. The method of manufacturing a display includes the steps of: forming a plurality of organic light-emitting devices in a display region on a substrate to form a light-emitting panel; forming projection-shaped reflection elements corresponding to the plurality of organic light-emitting devices, respectively, on a base to form a reflector; forming an adhesive layer along an outer edge of the light-emitting panel; and bonding the light-emitting panel and the reflector together with the adhesive layer in a vacuum atmosphere, thereby to form a vacuum layer in a space between the light-emitting panel and the reflector.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: June 30, 2015
    Assignee: Joled Inc
    Inventors: Hiroshi Tanaka, Kazuhito Hori
  • Patent number: 9029843
    Abstract: An organic light-emitting element comprising: an anode; a cathode; banks; a functional layer between the anode and the cathode; and a hole injection layer between the anode and the functional layer. The functional layer includes one or more sublayers including a light-emitting sublayer defined by the banks and that contains an organic material. The hole injection layer comprises tungsten oxide, includes an occupied energy level that is approximately 1.8 electron volts to approximately 3.6 electron volts lower than a lowest energy level of a valence band of the hole injection layer in terms of a binding energy, has a surface facing the functional layer, and has a recessed structure such that a portion of the surface overlapping with the light-emitting sublayer is located closer to the anode than other portions. The recessed structure has a recessed portion whose inner surface is in contact with the functional layer.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: May 12, 2015
    Assignee: Joled Inc.
    Inventors: Kenji Harada, Seiji Nishiyama, Takahiro Komatsu, Takayuki Takeuchi, Satoru Ohuchi, Yoshiaki Tsukamoto, Shinya Fujimura, Kei Sakanoue
  • Patent number: 9029842
    Abstract: An organic light-emitting element comprising: an anode; a cathode; banks; a functional layer between the anode and the cathode; and a hole injection layer between the anode and the functional layer. The functional layer includes at least a light-emitting sublayer defined by the banks and that contains an organic material. The hole injection layer comprises tungsten oxide and includes a crystal of the tungsten oxide, whose particle diameter is on an order of nanometers. Tungsten atoms constituting the tungsten oxide include both tungsten atoms with a valence of six and tungsten atoms with a valence less than six. The hole injection layer has a surface facing the functional layer, and a portion of the surface overlapping with the light-emitting sublayer is located closer to the anode than other portions, thereby forming a recessed structure having a recessed portion whose inner surface is in contact with the functional layer.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: May 12, 2015
    Assignee: Joled Inc.
    Inventors: Kenji Harada, Seiji Nishiyama, Takahiro Komatsu, Takayuki Takeuchi, Shinya Fujimura, Satoru Ohuchi, Hirofumi Fujita, Yoshiaki Tsukamoto
  • Patent number: 9023239
    Abstract: An ink for an organic light-emitting element includes a first solvent, a second solvent, and a functional material. The first and second solvents have equal or similar boiling points. The first solvent is such that an imitatively formed functional layer formed by replacing the second solvent with the first solvent, in a light-emitting region of an organic light-emitting element, is thicker at both end portions than at a central portion and the top surfaces of the end portions are positioned higher than the top surface of the central portion. The second solvent is such that an imitatively formed functional layer formed by replacing the first solvent with the second solvent, in a light-emitting region of an organic light-emitting element, is thicker at a central portion than at both end portions and the top surface of the central portion is positioned higher than the top surfaces of the end portions.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: May 5, 2015
    Assignees: Joled Inc., Sumitomo Chemical Company, Limited
    Inventors: Yuko Kawanami, Shinichiro Ishino, Tomoki Masuda, Hirotaka Nanno, Noriyuki Matsusue
  • Patent number: 9024053
    Abstract: A problem of the present invention is to prevent a base layer beneath the layer to be irradiated with light from deterioration in property and a functional thin film from deterioration in property as the fine patterning of a functional film is performed with light irradiation. Means for solving the problem is a compound obtained by dimerizing with light irradiation a compound (A) containing a group that has photosensitivity and can be photodimerized and a group having lyophilicity and a compound (B) containing a group that has photosensitivity and can be photodimerized and a group having liquid-repellency.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: May 5, 2015
    Assignees: Joled Inc., Sumitomo Chemical Company, Limited
    Inventors: Seiji Shinkai, Shuichi Haraguchi, Tomohiro Shiraki, Masashi Ogawa, Shuhei Nakatani, Kei Sakanoue, Osamu Goto, Hidenobu Kakimoto
  • Patent number: 9023171
    Abstract: A manufacturing method of a display panel comprises applying a paste including a sealing material to a substrate by using a nozzle, the nozzle being moved along a display region on the substrate from a start position located in a vicinity of the display region to an end position, so as to surround the display region. In the applying, the paste is applied such that a center line of the paste in an end region is substantially parallel to and separate from a center line of the paste in a start region, and a distance of separation between the center line of the paste in the end region and the center line of the paste in the start region is less than a width of the paste in a region other than the start region and the end region.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: May 5, 2015
    Assignee: Joled Inc
    Inventor: Hiroyuki Masuda
  • Patent number: 9019323
    Abstract: A display device according to the present invention includes: a variable voltage source which supplies a supply voltage to an organic EL display unit; and a voltage regulating unit which regulates an external application voltage output by the variable voltage source, the organic EL display unit further includes an anode-side power source line network and a cathode-side power source line network connected to the pixels and the variable voltage source, the display device further includes a voltage measuring unit which measures a voltage for a monitor pixel, and the voltage regulating unit which calculates distributions of voltage drop amount generated in the anode-side power source line network and the cathode-side power source line network, calculates a voltage for the monitor pixel from the distributions of the voltage drop amount calculated, and regulates the supply voltage based on the calculation result and the voltage measured by the voltage measuring unit.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: April 28, 2015
    Assignee: Joled, Inc.
    Inventors: Toshiyuki Kato, Kohei Ebisuno